Both interfaces support daisy chaining and can provide up to 30 volts of power to connected devices.įireWire is considered a high-speed interface, and therefore can be used for connecting peripheral devices that require fast data transfer speeds. The FireWire 800 interface, which was introduced on Macintosh computers in 2003, is backwards compatible with FireWire 400 devices using an adapter. FireWire 800 uses a 9-pin connector and can transfer data at up to 800 Mbps. FireWire 400 uses a 6-pin connector and supports data transfer rates of up to 400 Mbps. There are two primary versions of the FireWire interface – FireWire 400 (IEEE 1394a) and FireWire 800 (IEEE 1394b). Other names for IEEE 1394 include Sony i.Link and Yamaha mLAN, but Apple's FireWire name the most commonly used. It is also known as IEEE 1394, which is the technical name standardized by the IEEE. FireWire is an I/O interface developed by Apple Computer.
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